Stacking mechanism for printing, folding, or similar paper-treating machines.



R. E. FISCHER & M. WESGHER. STAGKING MECHANISM FOR PRINTING, FOLDING, OR SIMILAR PAPER TREATING MAUEINES.

' APPLICATION FILED APR. 2, 1909.

95&,?98, Patented May 24 1910.

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UNITED STATES PTFNT OFFICE.

ROBERT ERNST FISCHER AND MAX WESGHER, OF ELBERFELD, GERMANY.

STACKING MECHANISM FOR PRINTING, FOLDING, OR SIMILAR PAPER-TREATING MACHINES.

To all whom it may concern:

Be it known that we, ROBERT ERNST FISCHER and MAX Wnsormn, subjects of the German Emperor, residing at Elberfeld, in the Kingdom of Prussia, German Empire, have jointly invented new and useful Improvements in Stacking Mechanism for Printing, Folding, or Similar Paper-Treat ing Machines, of which the following is the specification.

Our invention relates to improvements in stacking mechanism for printing, folding or similar paper treating machines and it has for its object to enable the work to be stacked so that the pieces of paper or the like are piled so as to have their edges lying in a vertical plane. lVe attain this object by the mechanism illustrated in the accompanying drawing in which:

Figure 1 is a side view and Fig. 2 a front View of the mechanism. Fig. 3 illustrates a modified construction of part of the same.

a is a roller over which the papers, envelops or the like pass into the receiver.

6 is a fixed wall or member composed of stationary rails forming part of the receiver against which the papers strike and along which they slide downward. (l is another fixed wall or member composed of stationary guide rails closing the receiver at its rear side.

f and g are vibrating leaf springs, which press the papers during their fall as well as after the same are situated upon the pile, against the rails cl and b. The spring f is secured to the shaft h carrying the leverc' and participates in its movements. This lever 71 carries a roller 76 running on the cam plate Z and thus causes the spring 7" to vibrate. The shaft It also carries a pin or projection m which presses on a pin 0 connected with a second shaft a in such a manner that this shaft is likewise caused to vibrate. The second spring 9 is connected with the shaft n in such a manner that the spring 7" always oscillates outward when the spring 9 oscillates inward. Now when the sheets of paper, envelops, or the like reach the receiver constituted by the rails Z) and cl and the springs f and 9, they are pressed by the spring 7 against the rails b and by the spring 9 against the rails d, so that they Specification of Letters Patent.

Application filed April 2, 1909.

Patented May 24:, 1910.

Serial No. 487,421.

slide downward along these rails and so that they lie one above the other on the pile in a perfectly vertical manner. It is of great importance for the correct operation of the springs, that they should be operative alternately, the result of this being that harmful friction is avoided as one spring is unable to impede the action of the other in causing the sheets of paper displaced by one spring to pass over the other spring.

Instead of the leaf springs f and g the vibrating members may consist of curved rails as shown in Fig. 3 the curved portion of these rails being provided with steps or corrugations p. The vertical portions of these steps bear against the sheets during their fall.

It will be understood, that the construction described is only an example and that the construction may be modified in different ways, so for instance several vibrating members may be provided on one side or the vibrating members may be provided on all the four sides of the receiver, the idea of the invention consisting in regulating the posi' tion of the paper during their fall as well as onthe pile.

We claim:

1. In a stacking device the combination of stationary members forming two sides of the receiver, curved rails provided with steps forming the other side of the same and means for alternately operating the curved rails of one or the other side whereby the sheets of paper will be supported by and pushed into place by said steps, substantially as described and for the purpose set forth.

2. In a stacking machine, the combination with the receiver consisting of stationary and rocking members, a rock shaft upon which one of said rocking members is mounted, means for rocking said shaft, a second rock shaft upon which the other rocking member is mounted and connections between said shafts whereby said members will be advanced alternately in planes at an angle to each other.

3. In a stacking machine, the combination with the receiver consisting of stationary and rocking members, a rock shaft upon which said rocking member is mounted, a pin or projection carried by said shaft,

means for rocking said shaft, a second rock In testimony whereof We have signed our shaft arranged at substantially right angles names to this specification in the presence of 10 to said first shaft, a projection on said second two subscribing Witnesses.

shaft, with which the pin on the first shaft ROBERT ERNST FISCHER. [11. s] cooperates, the pin and projection being so MAX WESOHER. [be] positioned relatively to each other that as Witnesses:

one shaft is rocked inward the other is OTTO KoNie,

rocked outward and vice versa. FRITZ Mt'iLLER. 

